I meant to add this:
Hesitate about small business centre (4)

[Chalky] CO (small business) + RE ("er" backwards).

[rab]Spot on; it's an anagram but with an M (my first) removed - it would have been harder (but still I think acceptable) to have not included the "- and only very rarely" - the definition then being the "Uncommon" which doubled up as part of the anagram.

Hmmm - Apologies - I've just looked at it and seen that somehow I missed out the B - sorry, sorry, sorry - will check them better in future.

Nothing still outstanding?
It's not right to scry the lawnmower. (6)
He'll summon you for taking a bad grip on a faulty reamer. (4,6)